- 08 Dec, 2006 40 commits
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Akinobu Mita authored
This patch provides fault-injection capability for kmalloc. Boot option: failslab=<interval>,<probability>,<space>,<times> <interval> -- specifies the interval of failures. <probability> -- specifies how often it should fail in percent. <space> -- specifies the size of free space where memory can be allocated safely in bytes. <times> -- specifies how many times failures may happen at most. Debugfs: /debug/failslab/interval /debug/failslab/probability /debug/failslab/specifies /debug/failslab/times /debug/failslab/ignore-gfp-highmem /debug/failslab/ignore-gfp-wait Example: failslab=10,100,0,-1 slab allocation (kmalloc(), kmem_cache_alloc(),..) fails once per 10 times. Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Akinobu Mita authored
This patch provides base functions implement to fault-injection capabilities. - The function should_fail() is taken from failmalloc-1.0 (http://www.nongnu.org/failmalloc/) [akpm@osdl.org: cleanups, comments, add __init] Cc: <okuji@enbug.org> Signed-off-by:
Don Mullis <dwm@meer.net> Signed-off-by:
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Akinobu Mita authored
This patch set provides some fault-injection capabilities. - kmalloc() failures - alloc_pages() failures - disk IO errors We can see what really happens if those failures happen. In order to enable these fault-injection capabilities: 1. Enable relevant config options (CONFIG_FAILSLAB, CONFIG_PAGE_ALLOC, CONFIG_MAKE_REQUEST) and if you want to configure them via debugfs, enable CONFIG_FAULT_INJECTION_DEBUG_FS. 2. Build and boot with this kernel 3. Configure fault-injection capabilities behavior by boot option or debugfs - Boot option failslab= fail_page_alloc= fail_make_request= - Debugfs /debug/failslab/* /debug/fail_page_alloc/* /debug/fail_make_request/* Please refer to the Documentation/fault-injection/fault-injection.txt for details. 4. See what really happens. Signed-off-by: -
Yan Burman authored
Replace kmalloc+memset with kcalloc and simplify Signed-off-by:
Yan Burman <burman.yan@gmail.com> Cc: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by:
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Jesper Juhl authored
NFS3: Calculate 'w' a bit later in nfs3svc_encode_getaclres() This is a small performance optimization since we can return before needing 'w'. It also saves a few bytes of .text : Before: text data bss dec hex filename 1632 140 0 1772 6ec fs/nfsd/nfs3acl.o After: text data bss dec hex filename 1624 140 0 1764 6e4 fs/nfsd/nfs3acl.o Signed-off-by:Jesper Juhl <jesper.juhl@gmail.com> Cc: Neil Brown <neilb@suse.de> Signed-off-by:
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Jesper Juhl authored
NFS2: Calculate 'w' a bit later in nfsaclsvc_encode_getaclres() This is a small performance optimization since we can return before needing 'w'. It also saves a few bytes of .text : Before: text data bss dec hex filename 2406 212 0 2618 a3a fs/nfsd/nfs2acl.o After: text data bss dec hex filename 2400 212 0 2612 a34 fs/nfsd/nfs2acl.o Signed-off-by: -
Peter Zijlstra authored
> ============================================= > [ INFO: possible recursive locking detected ] > 2.6.18-1.2724.lockdepPAE #1 > --------------------------------------------- > nfsd/6884 is trying to acquire lock: > (&inode->i_mutex){--..}, at: [<c04811e5>] vfs_rmdir+0x73/0xf4 > > but task is already holding lock: > (&inode->i_mutex){--..}, at: [<f8dfa621>] > nfsd4_clear_clid_dir+0x1f/0x3d [nfsd] > > other info that might help us debug this: > 3 locks held by nfsd/6884: > #0: (hash_sem){----}, at: [<f8de05eb>] nfsd+0x181/0x2ea [nfsd] > #1: (client_mutex){--..}, at: [<f8df6d19>] > nfsd4_setclientid_confirm+0x3b/0x2cf [nfsd] > #2: (&inode->i_mutex){--..}, at: [<f8dfa621>] > nfsd4_clear_clid_dir+0x1f/0x3d [nfsd] > > stack backtrace: > [<c040524d>] dump_trace+0x69/0x1af > [<c04053ab>] show_trace_log_lvl+0x18/0x2c > [<c040595f>] show_trace+0xf/0x11 > [<c0405a53>] dump_stack+0x15/0x17 > [<c043ca7a>] __lock_acquire+0x110/0x9b6 > [<c043d91e>] lock_acquire+0x5c/0x7a > [<c061a41b>] __mutex_lock_slowpath+0xde/0x234 > [<c04811e5>] vfs_rmdir+0x73/0xf4 > [<f8dfa62b>] nfsd4_clear_clid_dir+0x29/0x3d [nfsd] > [<f8dfa733>] nfsd4_remove_clid_dir+0xb8/0xf8 [nfsd] > [<f8df6e90>] nfsd4_setclientid_confirm+0x1b2/0x2cf [nfsd] > [<f8def19a>] nfsd4_proc_compound+0x137a/0x166c [nfsd] > [<f8de00d5>] nfsd_dispatch+0xc5/0x180 [nfsd] > [<f8d09d83>] svc_process+0x3bd/0x631 [sunrpc] > [<f8de0604>] nfsd+0x19a/0x2ea [nfsd] > [<c0404e27>] kernel_thread_helper+0x7/0x10 > DWARF2 unwinder stuck at kernel_thread_helper+0x7/0x10 > Leftover inexact backtrace: > ======================= Some nesting annotation to the nfsd4 recovery code. The vfs operations called will take dentry->d_inode->i_mutex. Signed-off-by:Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Neil Brown <neilb@suse.de> Signed-off-by:
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Jeff Garzik authored
* diva, sedlbauer: the 'ready' label is only used in certain configurations * hfc_pci: - cast 'arg' to proper size for testing and printing - print out 'void __iomem *' variables with %p, rather than using incorrect casts that throw warnings Signed-off-by:
Jeff Garzik <jeff@garzik.org> Acked-by:
Karsten Keil <kkeil@suse.de> Signed-off-by:
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Adrian Bunk authored
HISAX_AMD7930 was never anywhere near to being working, and this doesn't seem to change in the forseeable future. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Acked-by:
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Burman Yan authored
Acked-by:
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Alexey Dobriyan authored
Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Acked-by:
Alan Cox <alan@redhat.com> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by:
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Jesper Juhl authored
There's a potential problem in isdn_ppp.c::isdn_ppp_decompress(). dev_alloc_skb() may fail and return NULL. If it does we will be passing a NULL skb_out to ipc->decompress() and may also end up dereferencing a NULL pointer at *proto = isdn_ppp_strip_proto(skb_out); Correct this by testing 'skb_out' against NULL early and bail out. Signed-off-by: -
Akinobu Mita authored
unregister_capi_driver() needs to be called in module cleanup. (It fixes data corruption by reloading t1isa driver) Cc: Kai Germaschewski <kai.germaschewski@gmx.de> Acked-by:
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Amol Lad authored
Cleanups done to use min/max macros from kernel.h. Handcrafted MIN/MAX macros are changed to use macros in kernel.h [akpm@osdl.org: warning fix] Signed-off-by:
Amol Lad <amol@verismonetworks.com> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by:
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Jiri Slaby authored
fix gcc signed/unsigned warnings Signed-off-by:
Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Jiri Slaby authored
- remove cvs rcsid and alter code that uses it. - allow a semicolon after use of macro to not confuse parsers (e.g. indent) by do {} while (0) - JIFFIES_DIFF is simple subtraction, subtract directly - returns cleanup -- do not put values in parenthesis and do not return nothing at the end of void functions - comments are /* */ in C (not //) Signed-off-by: -
Jiri Slaby authored
make the code indented by tabs. Signed-off-by:
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Jiri Slaby authored
Save 3 indent levels in interrupt routine by moving the code to a separate function. This needs to be done to allow Lindent do its work, since only 4 columns are used for indenting now and hence Lindent makes a big mess in the code, when moves it 4*5 columns to the right. Signed-off-by:
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Jiri Slaby authored
Do not set expires by hand, use kernel helper, which also calls add_timer. Signed-off-by:
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Jiri Slaby authored
register tty device dynamically according to the count of board ports. Signed-off-by:
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Jiri Slaby authored
Reorganizate module init and exit and implement logic, when something fails in these functions. The former is needed for proper handling dynamic tty_register_device. Signed-off-by:
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Jiri Slaby authored
Let's have these function at the end of the driver and expand stli_init directly into module_init fucntion, since there is nothing other to have there. Signed-off-by:
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Jiri Slaby authored
Enable ISA cards before pci_register_driver and then, enable each PCI card in probe function. Signed-off-by:
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Jiri Slaby authored
Check more retvals and react somehow. Signed-off-by:
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Jiri Slaby authored
Only ISA cards should be freed in module exit. Pci probed are freed in pci_remove. Define a flag, where we store this info a what to check against. Signed-off-by:
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Jiri Slaby authored
Kill possible race when getting brdnr by locking. Signed-off-by:
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Jiri Slaby authored
Disable compiling eisa stuff if STLI_EISAPROBE == 0. Signed-off-by:
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Jiri Slaby authored
- wipe gcc -W warnings by int -> uint conversion - move 2 global variables into their local place Signed-off-by:
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Jiri Slaby authored
Use only struct <name> instead of defining a new type <name_t>. Signed-off-by:
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Jiri Slaby authored
- remove unneeded license text - remove functions, that are implemented in kernel -- call them (strtoul, min, tolower) - do not cast NULL - there is no static table, throw away code, which takes care of it -- find module param cards in that place instead. Signed-off-by:
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Jiri Slaby authored
Use probing for pci devices. Change some __inits to __devinits to use these functions in probe function. Create stli_cleanup_ports and move there cleanup code from module_exit() code to not have duplicite cleanup code. Signed-off-by:
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Jiri Slaby authored
Use dynamic tty device registering depending on board's port count. (i -> retval change is relevant, since gcc complains about signedness of i) Signed-off-by:
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Jiri Slaby authored
- fix `gcc -W' un/signed warnings by converting some ints -> uints. - move 3 global variables into functions, where are they used. Signed-off-by:
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Jiri Slaby authored
Remove useless parenthesis and brackets. Signed-off-by:
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Jiri Slaby authored
Since assigning of stl_brds[brdnr] is racy, add locking to this critical section. Signed-off-by:
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Jiri Slaby authored
Release everything what was allocated and check return value of isa probing. Release only ISA boards in module exit, since pci have their own pci-probing-remove. Signed-off-by:
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Jiri Slaby authored
Delete macros and functions, that are implemented in kernel yet (strtoul, min, tolower). Expand one function body in place, where it is called from. Signed-off-by:
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Jiri Slaby authored
Some functions are now called from pci probing functiuon which is __devinit, not __init, correct this to not free functions after init if hotplug enabled. Signed-off-by:
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Jiri Slaby authored
This driver expect everything to work. Implement fail paths logic to release regions, irq hangler, memory... if something is in bad state. Signed-off-by:
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Jiri Slaby authored
Too many information is printed out (they may be easily obtained through sysfs), wipe them out in probe function. Convert rest of them to dev_ variants. Signed-off-by:
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